Expressions

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

What does the variable 'w' represent in the expression 8w + t?

Back

The variable 'w' represents the number of weeks worked.

Front

What does the variable 't' represent in the expression 8w + t?

Back

The variable 't' represents the amount of tips earned.

Front

How do you evaluate the expression (c-a)^b when a=2, b=3, c=4?

Back

Substitute the values: (4-2)^3 = 2^3 = 8.

Front

What is the coefficient in the expression 8w + t?

Back

The coefficient is the number before the variable, which is 8 in this case.

Front

Evaluate the expression 2b + 3 when b = 7.

Back

2(7) + 3 = 14 + 3 = 17.

Front

What is the result of b^2 + 4 when b = 3?

Back

3^2 + 4 = 9 + 4 = 13.

Front

What is a variable in mathematics?

Back

A variable is a symbol (often a letter) that represents an unknown value.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.